cumtrapz

Syntax

Z = cumtrapz(Y)Z = cumtrapz(X,Y)Z = cumtrapz(___,dim)

Description

Z = cumtrapz(Y) computes
an approximation of the cumulative integral of Y via
the trapezoidal method with unit spacing. To compute the integral
with other than unit spacing, multiply Z by the
spacing increment. Input Y can be complex.

For vectors, cumtrapz(Y) is a vector containing
the cumulative integral of Y.

For matrices, cumtrapz(Y) is a matrix the
same size as Y with the cumulative integral over
each column.

For multidimensional arrays, cumtrapz(Y) works
across the first nonsingleton dimension.

Z = cumtrapz(X,Y) computes
the cumulative integral of Y with respect to X using
trapezoidal integration. X and Y must
be vectors of the same length, or X must be a column
vector and Y an array whose first nonsingleton
dimension is length(X). cumtrapz operates
across this dimension. Inputs X and Y can
be complex.

If X is a column vector and Y an
array whose first nonsingleton dimension is length(X), cumtrapz(X,Y) operates
across this dimension.

Z = cumtrapz(___,dim) integrates
across the dimension of Y specified by scalar dim,
using any of the input arguments in the previous syntaxes. The length
of X must be the same as size(Y,dim).